Benefits of the New API - Learn OpenGL ES: For Mobile Game and Graphics Development - page 25

Figure 1-19 . Auto-generated methods for GLES20Renderer class

These warnings are indicated for unused imports in Main.java file. Quick fix
these warnings if you are on Eclipse. Finally, replace the class GLES20Renderer
with the code given in Listing 1-4 . You will see an error after replacing the
code—“GLES20 cannot be resolved to a variable.” This error is caused because the
class android.opengl.GLES20 is not imported yet. So, import it.

Listing 1-4. GL SURFACE/src/com/apress/android/glsurface/GLES20Render-

er.java

public class GLES20Renderer implements Renderer {

public void onSurfaceCreated(GL10 gl, EGLConfig
config) {
GLES20.glClearColor(0.0f, 0.0f, 1.0f, 1);

}